Global Elements Solutions

Boron Nitride (BN)

At GESmaterials, we provide high-performance Boron Nitride (BN) materials, available in both solid and powder forms, including Hexagonal Boron Nitride (h-BN) and Pyrolytic Boron Nitride (PBN). As an advanced synthetic ceramic, Boron Nitride is renowned for its unique combination of properties such as excellent electrical insulation, high thermal conductivity, superior dielectric strength, and remarkable oxidation resistance up to 800 ℃. Often referred to as “white graphene” or “inorganic graphite”, solid BN features a hexagonal platy crystal structure that delivers outstanding thermal shock resistance, high heat capacity, and easy machinability into complex shapes. In addition to its technical advantages, Boron Nitride is non-toxic and available as a colorless crystal or fine white powder, making it suitable for a wide range of demanding applications across electronics, metallurgy, aerospace, coatings, and other advanced industries. At GESmaterials, we are committed to providing reliable, high-purity BN solutions tailored to meet the requirements of modern high-tech manufacturing.

Related Products

Boron Nitride Applications

At GESmaterials, we supply Boron Nitride (BN), a unique material available in several crystalline forms (hexagonal, cubic, and wurtzite), each offering distinct properties. With high thermal conductivity, excellent dielectric strength, chemical inertness, and lubricating ability, BN is widely applied across advanced industries.

  • Electronics: BN provides thermal management and insulation in electronic devices. It is used for heat sinks, insulating components, dielectric substrates, and as a support material for high-performance electronics.

  • Cosmetics: Owing to its low friction and inert nature, BN is incorporated into cosmetic formulations, giving products a smooth texture and soft skin feel.

  • Aerospace: BN’s thermal stability makes it valuable in aerospace applications, including rocket nozzles, heat shields, and high-temperature structural components.

  • Dental & Medical: With biocompatibility and heat resistance, BN is used in dental tools and other medical components requiring durability and precision.

  • Ceramic Manufacturing: BN ceramics are ideal for kiln furniture, crucibles, and refractory parts, offering stability in aggressive high-temperature environments.

  • Nanotechnology: Boron nitride nanotubes (BNNTs) are being developed as reinforcements in composites, with potential applications in nanoelectronics and advanced materials.

  • BN Crucibles: Hexagonal BN (H-BN) is commonly used for crucibles in high-temperature material processing and laboratory experiments.

  • Abrasives & Heat Spreaders: Cubic BN (C-BN) is a top-tier abrasive for cutting and grinding tools, while also serving as an excellent material for heat spreaders.

  • Dielectric Substrate: Wurtzite BN (W-BN) is considered an advanced dielectric material for optical, electronic, and graphene-based devices.

Boron Nitride (BN) Structures

Hexagonal Boron Nitride (h-BN)

  • Structure: The most stable BN phase at ambient conditions, with a layered structure similar to graphite.
  • Properties: Soft, stable, and chemically inert, with excellent lubricating ability and high thermal stability.
  • Applications: Used as a solid lubricant, in cosmetic formulations for smooth texture, in high-temperature coatings, and as graphene-like nanosheets for boron nitride nanotubes.

Cubic Boron Nitride (c-BN)

  • Structure: A superhard phase, second only to diamond.
  • Properties: Exceptional hardness, oxidation resistance, and insolubility in metals at high temperatures.
  • Applications: Widely used as an abrasive in grinding wheels and cutting tools, and as a protective coating in high-temperature industrial processes.

Wurtzite Boron Nitride (w-BN)

  • Structure: A rare polymorph with a crystal structure similar to lonsdaleite.
  • Properties: Potentially harder than c-BN, with remarkable mechanical strength.
  • Applications: Though less common, w-BN is a subject of research for applications requiring extreme hardness and durability.

Boron Nitride

Properties
Chemical FormulaBN
Mechanical
Density1.9 g/cm3
Hardness2.26 GPa
Modulus of Elasticity46.9 GPa
Flexural Strength75.8 MPa
Compressive Strength143 MPa
Poisson’s Ratio
Fracture Toughness– MPa m½
Electrical
Dielectric Strength95 ac V/mm
Dielectric Constant4.6 (@ 1 MHz)
Volume Resistivity10^14 ohm-cm
Thermal
Coefficient of Thermal Expansion7.54 x 10^-6/°C
Thermal Conductivity20 W/(m*K)
Specific Heat16.1 x10^3 J/(Kg*K)
Shock Resistance
Maximum Working Temperature2200 vacuum °C

Pyrolytic Boron Nitride

Properties
Chemical FormulaPBN
Mechanical
Density2.0-2.2 g/cm3
Hardness4 Mohs
Modulus of Elasticity40 GPa
Flexural Strength85 Mpa
Compressive Strength200 MPa
Poisson’s Ratio0.11
Fracture Toughness1.5 MPa·m¹/²
Electrical
Dielectric Strength56 kV/mm
Dielectric Constant4.0 (@ 1 MHz)
Volume Resistivity>10¹³ ohm·cm
Thermal
Coefficient of Thermal Expansion1.4 x 10-6 /°C
Thermal Conductivity60 W/m·K
Specific Heat0.8 J/g·K
Shock Resistance
Maximum Working Temperature1800 °C

Inquiry to GES Materials

Please describe the product(s) for which you would like more information/quotation.Items marked with an asterisk(*) are required.